Biaxially oriented film of polyethylene-2,6-naphthalenedicarboxy

Stock material or miscellaneous articles – Structurally defined web or sheet – Continuous and nonuniform or irregular surface on layer or...

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428143, 528298, C08G 6302, C08G 6318

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056186096

ABSTRACT:
A biaxially oriented film of a polyethylene-2,6-naphthalenedicarboxylate, which (1) has a Young's modulus of at least 600 kg/mm.sup.2 in the transverse direction and a Young's modulus of at least 500 kg/mm.sup.2 in the longitudinal direction, the Young's modulus in the transverse direction being greater than the Young's modulus in the longitudinal direction, (2) satisfies the following relationships between an elongation S.sub.T (%) in the transverse direction per kg/mm.sup.2 of a load at 120.degree. C. and the Young's modulus Y.sub.T (kg/mm.sup.2) in the transverse direction,

REFERENCES:
patent: 4720412 (1988-01-01), Katoh et al.
patent: 5312893 (1994-05-01), Hamano et al.
patent: 5352534 (1994-10-01), Hamano et al.
patent: 5380577 (1995-01-01), Hamano et al.

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